Power take-off apparatus for motorcycle

Abstract

To provide a power take-off device for a motorcycle capable of taking measures against heat generation of an engine of the motorcycle with a simple structure.SOLUTION: The motorcycle power take-off device 1 comprises: a base 2; a front roller 3 having a front roller body 31 and a front roller shaft body 32, the front roller shaft body 32 being rotatably attached to the base 2, and the front roller body 31 on which the rear wheel of the motorcycle can be placed; a rear roller 4 having a rear roller body 41 and a rear roller shaft body 42, the rear roller shaft body 42 being rotatably attached to the base 2, the rear roller body 41 on which the rear wheel of the motorcycle can be placed, and the rear roller shaft body 42 from which power for driving an external device is taken out; a motorcycle holding mechanism 5 fixed to the base 2 and capable of pressing and holding the motorcycle from above; and a blower 6 having a plurality of blades 61 and a blowout port 62, the plurality of blades 61 rotating following the rotation of the front roller shaft body 32 and blowing out wind from the blowout port 62.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a power take-off device for a motorcycle that takes off power from a rear wheel of the motorcycle. [Background technology]

[0002] Obtaining power is one of the most important things in disaster areas. The obtained power can be used to operate generators to generate electricity, or to operate pumps to purify water from rivers, ponds, and other water sources and turn it into drinking water or water for daily use.

[0003] Such power can be, for example, the rotational force of a bicycle's rear wheel, as disclosed in Patent Document 1. In Patent Document 1, a bicycle is placed on a stand and a pump is connected to the rear wheel. The rotational force of the rear wheel generated by pedaling drives the pump, purifying water from a water source and producing drinking water. Alternatively, the power can be, for example, the rotational force of the rear wheel of a motorcycle (moped), as disclosed in Patent Document 2. Patent Document 2 discloses a motorcycle power takeoff device that includes a base (frame) on which front and rear rollers are rotatably attached, and a motorcycle holding mechanism (upright holding mechanism) fixed to the base and holding the motorcycle. A generator is connected to the rear roller via a rotation transmission mechanism. Furthermore, in Patent Document 2, the rear wheel of a motorcycle is placed on the front and rear rollers, and the rotational force of the rear wheel generated by starting the motorcycle's engine drives a generator to generate electricity. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] International Publication No. WO00 / 59832 [Patent Document 2] Japanese Patent Application Publication No. 2019-156363 Summary of the Invention [Problem to be solved by the invention]

[0005] Using the rotational force of the rear wheel of a motorcycle as disclosed in Patent Document 2 as power source requires more fuel than using the rotational force of the rear wheel of a bicycle as power source, but it is possible to obtain greater power. However, when a motorcycle's engine is started, it generates heat. While the engine is cooled by exposure to wind while the vehicle is moving, some kind of heat generation countermeasure is necessary if the rear wheel is rotated without the vehicle being moved.

[0006] The present invention has been made in consideration of the above circumstances, and its object is to provide a power take-off device for a motorcycle that has a simple structure but can take power from the rear wheel of a motorcycle and can also take measures to prevent heat generation from the motorcycle engine. [Means for solving the problem]

[0007] In order to achieve the above object, a power take-off device for a motorcycle according to claim 1 provides a front roller having a base, a front roller body and a front roller shaft body formed along its central axis, the front roller shaft body being rotatably attached to the base, on which a rear wheel of a motorcycle can be placed, and a rear roller body and a rear roller shaft body formed along its central axis, the rear roller shaft body being rotatably attached to the base, the rear wheel of the motorcycle being placed on the rear roller body, and the rear a rear roller capable of extracting power for driving an external device from the roller shaft; a motorcycle holding mechanism fixed to the base capable of holding the motorcycle by pressing from above; and a blower having a plurality of blades and an outlet, each of the plurality of blades being attached radially around a rotating shaft fixed to the front roller shaft, so that when the rear wheel of the motorcycle rotates, the plurality of blades rotate in accordance with the rotation of the front roller shaft, and blow air from the outlet toward the engine of the motorcycle. The nozzle is formed at the tip of a nozzle that is flexible and can maintain its shape.

[0008] Claim 2The motorcycle power take-off device described in the above item comprises a front roller having a base, a front roller body and a front roller axle formed along its central axis, the front roller axle being rotatably attached to the base, and a rear wheel of the motorcycle being placed on the front roller body; a rear roller having a rear roller body and a rear roller axle formed along its central axis, the rear roller axle being rotatably attached to the base, and the rear wheel of the motorcycle being placed on the rear roller body so that power for driving an external device can be taken out from the rear roller axle; and a rear roller fixed to the base and pressing the motorcycle from above to hold the motorcycle. and a blower having a plurality of blades and an outlet, wherein when the rear wheel of the motorcycle rotates, the plurality of blades rotate in accordance with the rotation of the front roller shaft body and blow air from the outlet toward the engine of the motorcycle, the motorcycle holding mechanism has a pair of side parts each fixed at its lower part to the left and right sides of the base, and a top part connected to the upper part of each of the pair of side parts and capable of contacting the upper surface of the motorcycle, and the motorcycle holding mechanism is provided with a turnbuckle on each of the pair of side parts that can adjust the length from the lower part to the upper part. [Effects of the Invention]

[0009] According to the motorcycle power take-off device of the present invention, it is possible to take power from the rear wheel of a motorcycle while having a simple structure, and it is also possible to take measures against heat generation in the motorcycle engine. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a right side view showing, in a reduced scale, a state in which a rear wheel of a motorcycle is disposed on a motorcycle power take-off device according to an embodiment of the present invention. FIG. [Figure 2] FIG. 2 is a right side view showing the power take-off device of the motorcycle. [Figure 3] FIG. 2 is a plan view showing the power take-off device of the motorcycle. [Figure 4] FIG. 2 is a front view showing the power take-off device of the motorcycle. [Figure 5] 4 is a plan view of the motorcycle power take-off device of FIG. 3 with a pump and a generator attached thereto. FIG. [Figure 6] 10A and 10B are partial front views showing the state when the posture stabilizer of the motorcycle power take-off device is used, where (a) shows the state when the posture stabilizer is fixed to the carrier, and (b) shows the state when two posture stabilizers are clamping part of the motorcycle. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, an embodiment of the present invention will be described. As shown in Fig. 1, a motorcycle power takeoff device 1 according to an embodiment of the present invention takes off power from a rear wheel RW of a motorcycle MC. As shown in Figs. 2 to 4, this motorcycle power takeoff device 1 includes a base 2, a front roller 3, a rear roller 4, a motorcycle holding mechanism 5, and a blower 6. In this application, a motorcycle MC refers to a two-wheeled vehicle in which the rear wheel RW rotates when the engine is started, and includes motorized bicycles, standard motorcycles, and large motorcycles.

[0012] The base 2 is attached with a front roller 3, a rear roller 4, a motorcycle holding mechanism 5, and a blower 6, which will be described in detail later, and is in contact with the ground to support the weight of the rear wheel RW of the motorcycle MC when it is placed on the front roller 3 and the rear roller 4, as will be described later. The base 2 (and the front roller 3, rear roller 4, and motorcycle holding mechanism 5) can be made of metal or a strong synthetic resin.

[0013] The front roller 3 has a front roller main body 31 and a front roller shaft 32. The front roller shaft 32 is formed along the central axis of the front roller main body 31 and protrudes on both sides of the front roller main body 31 in the axial direction. The front roller shaft 32 is rotatably attached to the base 2. Normally, the front roller shaft 32 is attached to the base 2 via a bearing. A rear wheel RW of the motorcycle MC can be placed on the front roller main body 31.

[0014] The front roller shaft 32 is preferably adjustable in its longitudinal position relative to the base 2. To achieve this, fastener insertion holes 2a, 2a that are long in the longitudinal direction are formed in the left and right parts of the base 2, and the left and right front roller mounting members 21, 21 to which the front roller shaft 32 is attached can be moved longitudinally along the respective fastener insertion holes 2a, 2a together with fasteners 21A (two fasteners 21A each in the figure) and fixed in position by the fasteners 21A (see FIG. 3). If the front roller shaft 32 is adjustable in its longitudinal position relative to the base 2, it is possible to adjust the distance between the front roller 3 and the rear roller 4 to match the size of the rear wheel RW of the motorcycle MC. The left and right front roller mounting members 21, 21 are part of the base 2. The fasteners are not particularly limited, but in FIGS. 2 to 4, all fasteners, including fastener 21A, are shown as thumb screws with washers.

[0015] The rear roller 4 is provided behind the front roller 3. The rear roller 4 has a rear roller main body 41 and a rear roller axle 42. The rear roller axle 42 is formed along the central axis of the rear roller main body 41 and protrudes on both axial sides of the rear roller main body 41. The rear roller axle 42 is rotatably attached to the base 2. Typically, the rear roller axle 42 is attached to the base 2 via a bearing. A rear wheel RW of a motorcycle MC can be placed on the rear roller main body 41. Note that, although it cannot move back and forth in FIGS. 2 to 4, a rear roller mounting member 22 similar to the front roller mounting member 21 is provided so that the rear roller axle 42 can be attached to it. The rear roller mounting member 22 is fixed with a fastener 22A.

[0016] Power for driving external equipment can be extracted from the rear roller shaft 42. For example, as shown in FIG. 5, the external equipment can be a pump 7 and a generator 8. It is also possible to use only one of the pump 7 and the generator 8 as the external equipment. The pump 7 can be attached to the rear roller shaft 42 via a pump adapter 7A. The generator 8 can be attached to the rear roller shaft 42 via a generator adapter 8A. The pump adapter 7A and the generator adapter 8A may simply facilitate the attachment of the pump 7 and the generator 8 as shown in FIG. 5, or they may be provided with power transmission members such as gears and belts. Note that although the areas above and below the pump 7 are omitted in FIG. 5, a water source may be located above the pump and a water purifier may be installed below the pump.

[0017] The motorcycle holding mechanism 5 is fixed to the base 2 and is capable of holding the motorcycle MC by pressing it from above. The motorcycle holding mechanism 5 has a pair of side portions 51, 51 and a top portion 52. The pair of side portions 51, 51 are fixed at their respective lower portions to the left and right sides of the base 2. The top portion 52 is connected to the upper portions of the pair of side portions 51, 51 and is capable of coming into contact with the top surface of the motorcycle MC.

[0018] Preferably, the position of each of the pair of side portions 51, 51 in the front-rear direction relative to the base 2 is adjustable. To achieve this, a fastener insertion hole 2b that is long in the front-rear direction is formed in the base 2 for each of the pair of side portions 51, 51 (see FIG. 2), and the pair of side portions 51, 51 can be moved front-rear along each fastener insertion hole 2b together with two fasteners 51A and fixed in position by the two fasteners 51A. If the position of each of the pair of side portions 51, 51 in the front-rear direction relative to the base 2 is adjustable, the position of the top portion 52 in the front-rear direction, i.e., the position at which the motorcycle MC is pressed from above, can be adjusted to match the position of the cargo bed CA or seat SE of the motorcycle MC.

[0019] The top portion 52 is normally adjustable in height so as to come into contact with and press against the upper surface of the motorcycle MC (specifically, the upper surface of the loading platform CA or the seat SE) from above.

[0020] Here, the top portion 52 can be configured with two rod members 520, 520 whose height is adjustable so that the top surface of the motorcycle MC can come into contact with them at various points. To achieve this, two fastener insertion holes 51ba, 51ba that are long in the vertical direction can be formed in the upper portion 51b of each of the pair of side portions 51, 51, and the two rod members 520, 520 can be moved up and down along the fastener insertion holes 51ba, 51ba together with the two fasteners 520A, 520A and fixed in position by the two fasteners 520A, 520A.

[0021] Furthermore, a plurality of posture stabilizers 521 can be attached to the top part 52 to stabilize the posture of the motorcycle MC. The posture stabilizer 521 can use a U-bolt 521a and fasteners 521b, 521c that are screwed to both ends of the U-bolt 521a (see FIG. 4). In order to be able to change the position of the posture stabilizer 521 in the left-right direction, a fastener insertion hole 52a that is long in the left-right direction is formed in the top part 52 (see FIG. 3), and the posture stabilizer 521 can be moved left and right along the fastener insertion hole 52a and fixed in position by the fasteners 521b, 521c.

[0022] For example, when the top part 52 presses the loading platform CA from above, the shaft CAa extending in the front-to-rear direction of the loading platform CA can be fixed to the top part 52 with a U-bolt 521a of the posture stabilizer 521, as shown in Fig. 6(a). Also, when the top part 52 presses a seat SE or the like from above, the seat SE can be sandwiched and stabilized with the U-bolts 521a of two posture stabilizers 521, as shown in Fig. 6(b). Note that the posture stabilizer 521 can be replaced with something other than the U-bolt 521a, etc., depending on the shape of the loading platform CA or the seat SE of the motorcycle MC.

[0023] Each of the pair of side portions 51, 51 is preferably provided with a turnbuckle 511 whose length from the lower portion 51a to the upper portion 51b is adjustable. Each of the turnbuckles 511 has a turnbuckle body 511a, a lower screw 511b, and an upper screw 511c. The length from the lower portion 51a to the upper portion 51b is shortened by rotating the turnbuckle body 511a in one direction (clockwise as viewed from above in the figure), and is lengthened by rotating it in the opposite direction. After the top portion 52 is brought into contact with the upper surface of the motorcycle MC, shortening the length from the lower portion 51a to the upper portion 51b using the turnbuckles 511 of the pair of side portions 51, 51 makes it easier for the top portion 52 to strongly press against the motorcycle MC from above and hold it in place.

[0024] The blower 6 has a plurality of blades 61 and an outlet 62. The blades 61 are attached radially around a rotating shaft 63. The rotating shaft 63 may be fixed to the front roller shaft 32 as shown in FIG. 2, or a power transmission member such as a gear or a belt may be provided between the rotating shaft 63 and the front roller shaft 32. When the rear wheel RW of the motorcycle MC rotates, the blades 61 of the blower 6 rotate in accordance with the rotation of the front roller shaft 32, and blow air from the outlet 62. Note that while two blowers 6 are shown installed on the left and right sides in FIG. 2, only one blower 6 may be installed as long as sufficient airflow can be obtained. Also, in FIG. 2, the blades 61, the rotating shaft 63, and the front roller shaft 32 are indicated by dashed lines.

[0025] The blower 6 is configured to blow air toward the engine of the mounted motorcycle MC from an outlet 62. For this purpose, the nozzle 64, at the tip of which the outlet 62 is formed, may be flexible (deformable) and able to maintain its shape.

[0026] Thus, the motorcycle power take-off device 1 has a simple structure, yet is capable of taking power from the rear wheel RW of the motorcycle MC, and also provides a measure against heat generation in the motorcycle engine.

[0027] The above describes a motorcycle power take-off device according to an embodiment of the present invention. However, the present invention is not limited to the above-described embodiment, and various design modifications are possible within the scope of the claims. [Explanation of symbols]

[0028] 1. Motorcycle power take-off device 2 pedestal 2a, 2b Fastener insertion holes 21 Front roller mounting member 21A Fastener 22 Rear roller mounting member 22A Fastener 3 Front roller 31 Front roller body 32 Front roller shaft 4 Rear roller 41 Rear roller body 42 Rear roller shaft 5 Motorcycle holding mechanism 51 Side 51a Lower part of the side 51b Upper part of the side 51ba Fastener insertion hole 511 Turnbuckle 511a Turnbuckle body 511b Lower screw 511c upper screw 51A Fasteners 52 Heaven 52a Fastener insertion hole 520 Bar member 520A Fasteners 521 Posture stabilizer 521a U-bolt 521b, 521c fasteners 6. Blower 61 Feather 62 spout 63 Rotating shaft 64 nozzles 7. Pump 7A pump adapter 8. Generator 8A generator adapter CA Motorcycle carrier CAa shaft MC Motorcycle RW Motorcycle rear wheel SE motorcycle seat

Claims

1. With a base, a front roller having a front roller body and a front roller shaft body formed along the central axis thereof, the front roller shaft body being rotatably attached to the base, and a rear wheel of a motorcycle being able to be placed on the front roller body; a rear roller having a rear roller body and a rear roller shaft body formed along its central axis, the rear roller shaft body being rotatably attached to the base, the rear wheel of the motorcycle being placed on the rear roller body, and power for driving an external device being able to be extracted from the rear roller shaft body; a motorcycle holding mechanism that is fixed to the base and that can hold the motorcycle by pressing it from above; a blower having a plurality of blades and an air outlet, wherein when the rear wheel of the motorcycle rotates, the plurality of blades rotate in accordance with the rotation of the front roller shaft body to blow out air from the air outlet; A motorcycle power take-off device comprising:

2. 2. The motorcycle power take-off device according to claim 1, The front roller shaft is adjustable in position relative to the base in the front-rear direction.

3. 2. The motorcycle power take-off device according to claim 1, The motorcycle holding mechanism includes a pair of side parts each fixed at its lower part to the left and right sides of the base, and a top part connected to the upper part of each of the pair of side parts and capable of contacting the upper surface of the motorcycle.

4. 4. The motorcycle power take-off device according to claim 3, A motorcycle power take-off device in which the pair of side portions of the motorcycle holding mechanism are each adjustable in position in the front-rear direction relative to the base.

5. 4. The motorcycle power take-off device according to claim 3, The top portion of the motorcycle holding mechanism is adjustable in height.

6. 4. The motorcycle power take-off device according to claim 3, The motorcycle holding mechanism has a turnbuckle on each of the pair of side portions, the turnbuckle being adjustable in length from bottom to top.

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